154022201 has 2 divisors, whose sum is σ = 154022202. Its totient is φ = 154022200.

The previous prime is 154022179. The next prime is 154022203. The reversal of 154022201 is 102220451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146047225 + 7974976 = 12085^2 + 2824^2 .

It is an emirp because it is prime and its reverse (102220451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154022201 - 2¹⁰ = 154021177 is a prime.

Together with 154022203, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154022201.

It is not a weakly prime, because it can be changed into another prime (154022203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77011100 + 77011101.

It is an arithmetic number, because the mean of its divisors is an integer number (77011101).

Almost surely, 2^154022201 is an apocalyptic number.

It is an amenable number.

154022201 is a deficient number, since it is larger than the sum of its proper divisors (1).

154022201 is an equidigital number, since it uses as much as digits as its factorization.

154022201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 154022201 is about 12410.5681175360. The cubic root of 154022201 is about 536.0365973842.

Adding to 154022201 its reverse (102220451), we get a palindrome (256242652).

The spelling of 154022201 in words is "one hundred fifty-four million, twenty-two thousand, two hundred one".